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Finding the Fourth Proportional to 268,423.76, 370,434.32 and 153,722.88

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Solution

The fourth proportional to 268,423.76, 370,434.32 and 153,722.88 is: 212,143.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,423.76 : 370,434.32 = 153,722.88 : x
  2. Step 2: Convert to fraction form
    268,423.76/370,434.32 = 153,722.88/x
  3. Step 3: Cross multiply
    268,423.76x = 370,434.32 × 153,722.88
  4. Step 4: Simplify right side
    268,423.76x = 56,944,230,521.24
  5. Step 5: Solve for x
    x = 56,944,230,521.24/268,423.76
  6. Step 6: Final answer
    x = 212,143.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.